161340 has 24 divisors (see below), whose sum is σ = 451920. Its totient is φ = 43008.

The previous prime is 161339. The next prime is 161341. The reversal of 161340 is 43161.

161340 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (161339) and next prime (161341).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285 + ... + 1404.

It is an arithmetic number, because the mean of its divisors is an integer number (18830).

2¹⁶¹³⁴⁰ is an apocalyptic number.

161340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161340 is an abundant number, since it is smaller than the sum of its proper divisors (290580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161340 is a wasteful number, since it uses less digits than its factorization.

161340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701 (or 2699 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 161340 is about 401.6715075780. The cubic root of 161340 is about 54.4394861821.

It can be divided in two parts, 1613 and 40, that added together give a triangular number (1653 = T₅₇).

The spelling of 161340 in words is "one hundred sixty-one thousand, three hundred forty".